Implementation: Stage 1

Creating a spreadsheet

Open up Microsoft Excel and type in the following column headings ..

• Product name
• Number Bought
• Cost to buy
• Number sold
• Number left

Then highlight the cells to row 21 and put on a border

Students should type in 20 products that their shop will be selling. They should make up the prices that it costs to buy the products and keep them low [remember to format cells to currency where needed].

Our first calculation will be to find out how much stock is left at the end of each day - and so, students will need to type this formula into Cell E2

= B2-D2 [starting number in cell B2 minus number sold in D2]

To ensure this formula calculates all the stock left [against each product], you need to drag this formula down into all the remaining cells in Column E [Number Left] ... ensure this formula stretches the entire length of column E particularly if you add further products!

Place the cursor at the right hand corner of Cell E2 and when this changes to a heavy black cross, simply drag the mouse to plant the formula in the other Column E cells.

Example 3 | Example 4

Implementation: Stage 2 ...